<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>胶体金识别系统用户界面登录</title>
    </head>
    <boby>
        <h1>登录</h1>
        <form method="post">
           用户名: <input type='text' name='user_name'><br>
           密码: <input type="password" name="pwd"><br>
           <input type="submit" value="提交"> 
        </form>
    </boby>
</html>

